chore(deps): bump @docusaurus/remark-plugin-npm2yarn in /testsite

Bumps [@docusaurus/remark-plugin-npm2yarn](https://github.com/facebook/docusaurus/tree/HEAD/packages/docusaurus-remark-plugin-npm2yarn) from 3.0.0-alpha.0 to 3.0.0-beta.0.
- [Release notes](https://github.com/facebook/docusaurus/releases)
- [Changelog](https://github.com/facebook/docusaurus/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/docusaurus/commits/v3.0.0-beta.0/packages/docusaurus-remark-plugin-npm2yarn)

---
updated-dependencies:
- dependency-name: "@docusaurus/remark-plugin-npm2yarn"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

testsite/package.json

@@ -14,7 +14,7 @@
   "dependencies": {
     "@docusaurus/core": "3.0.0-alpha.0",
     "@docusaurus/preset-classic": "3.0.0-alpha.0",
-    "@docusaurus/remark-plugin-npm2yarn": "3.0.0-alpha.0",
+    "@docusaurus/remark-plugin-npm2yarn": "3.0.0-beta.0",
     "@mdx-js/react": "^2.3.0",
     "@stoplight/json-ref-resolver": "^3.1.6",
     "ajv": "^8.12.0",